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/*
* Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
* Copyright (c) 2015-2018 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#ifdef __NR_getdents64
# include <assert.h>
# include <dirent.h>
# include <fcntl.h>
# include <inttypes.h>
# include <stddef.h>
# include <stdio.h>
# include <sys/stat.h>
# include <unistd.h>
static const char fname[] =
"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\n"
"A\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nA\nZ";
static const char qname[] =
"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\n"
"A\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nA\\nZ";
typedef struct {
uint64_t d_ino;
uint64_t d_off;
unsigned short d_reclen;
unsigned char d_type;
char d_name[256];
} kernel_dirent64;
static char buf[8192];
static const char *
str_d_type(const unsigned char d_type)
{
switch (d_type) {
case DT_DIR:
return "DT_DIR";
case DT_REG:
return "DT_REG";
default:
return "DT_UNKNOWN";
}
}
static void
print_dirent(const kernel_dirent64 *d)
{
const unsigned int d_name_offset = offsetof(kernel_dirent64, d_name);
int d_name_len = d->d_reclen - d_name_offset;
assert(d_name_len > 0);
printf("{d_ino=%" PRIu64 ", d_off=%" PRId64
", d_reclen=%u, d_type=%s, d_name=",
d->d_ino, d->d_off, d->d_reclen, str_d_type(d->d_type));
if (d->d_name[0] == '.')
printf("\"%.*s\"}", d_name_len, d->d_name);
else
printf("\"%s\"}", qname);
}
int
main(void)
{
static const char dname[] = "getdents64.test.tmp.dir";
assert(!mkdir(dname, 0700));
assert(!chdir(dname));
(void) close(0);
assert(!creat(fname, 0600));
assert(!close(0));
assert(!open(".", O_RDONLY | O_DIRECTORY));
unsigned long count = (unsigned long) 0xfacefeeddeadbeefULL;
long rc = syscall(__NR_getdents64, (long) 0xdefacedffffffffULL, NULL,
count);
printf("getdents64(-1, NULL, %u) = %ld %s (%m)\n",
(unsigned) count, rc, errno2name());
count = (unsigned long) 0xfacefeed00000000ULL | sizeof(buf);
while ((rc = syscall(__NR_getdents64, 0, buf, count))) {
kernel_dirent64 *d;
long i;
if (rc < 0)
perror_msg_and_skip("getdents64");
printf("getdents64(0, [");
for (i = 0; i < rc; i += d->d_reclen) {
d = (kernel_dirent64 *) &buf[i];
if (i)
printf(", ");
print_dirent(d);
}
printf("], %u) = %ld\n", (unsigned) count, rc);
}
printf("getdents64(0, [], %u) = 0\n", (unsigned) count);
puts("+++ exited with 0 +++");
assert(!unlink(fname));
assert(!chdir(".."));
assert(!rmdir(dname));
return 0;
}
#else
SKIP_MAIN_UNDEFINED("__NR_getdents64")
#endif
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